compose-nuget-sources

#!/usr/bin/env xonsh

# Generate flatpak sources from nuget package.config files
#
# Copyright (c) 2021 SIL International. MIT License.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#
# Output a flatpak yaml sources list from one or more nuget packages.config
# files. NuGet packages will be downloaded (and cached) to compute their
# checksums.
# Usage:
#   compose-nuget-sources output-sources.yml dest-dir-in-build dir1/packages.config [dir2/packages.config ...]
# Dependencies: xonsh wget

import sys
import collections
import xml.etree.ElementTree as ET
$RAISE_SUBPROC_ERROR = True

# trace on
# $XONSH_TRACE_SUBPROC = True

outputSourcesPath = sys.argv[1]
destDir = sys.argv[2]
packagesConfigPaths = sys.argv[3:]

PackageAndVersionSpecification = collections.namedtuple('PackageAndVersionSpecification', ['name', 'version'])

nugetSources = []
# packageSet should specify pairs of dependencies and versions, with no
# duplicates. For example:
#   SomeLib.Foo version 11
#   SomeLib.Foo version 12
#   OtherLib version 3
packageSet = set()
if 'XDG_CACHE_HOME' in ${...}:
    cacheHome = $XDG_CACHE_HOME
else:
    cacheHome = '{}/.cache'.format($HOME)
cachePath = '{}/nuget-sources-flatpak'.format(cacheHome)
mkdir -p @(cachePath)

def processPackagesConfig(path):
    packagesTree = ET.parse(path)
    root = packagesTree.getroot()
    packageElements = root.findall('./package')
    for package in packageElements:
        name = package.attrib['id']
        version = package.attrib['version']
        packageSet.add(PackageAndVersionSpecification(name=name, version=version))

def writeSourceRecord(name, version):
    nameLower = name.lower()
    url = 'https://api.nuget.org/v3-flatcontainer/{}/{}/{}.{}.nupkg'.format(nameLower, version, nameLower, version)
    wget --timestamping --directory-prefix=@(cachePath) @(url)
    filename = '{}.{}.nupkg'.format(nameLower, version)
    destFilename = '{}.{}.nupkg'.format(name, version)
    pathToCachedFile = '{}/{}'.format(cachePath, filename)
    sha512 = $(sha512sum @(pathToCachedFile) | perl -p -e 's/ .*$//').rstrip()
    nugetSources.append('- type: file')
    nugetSources.append('  url: {}'.format(url))
    nugetSources.append('  sha512: {}'.format(sha512))
    nugetSources.append('  dest: {}'.format(destDir))
    nugetSources.append('  dest-filename: {}'.format(destFilename))

for packagesConfigPath in packagesConfigPaths:
    processPackagesConfig(packagesConfigPath)

for packageSpecification in sorted(packageSet):
    name = packageSpecification.name
    version = packageSpecification.version
    writeSourceRecord(name, version)

with open(outputSourcesPath, 'w') as out:
    out.write('# Generated file\n')
    for line in nugetSources:
        out.write(line + '\n')